“…Another technique that has been verified in overselectivity research is the imposition of ob-patterns occur as a result of some form of restricted stimulus control. I have identified the following three conditions as potential sources of error patterns when learner's attend to only one feature of a compound stimulus: (a) a discrimination task involving the presentation of two compound stimuli, with a feature that is identical to both stimuli (Etzel, Bickel, Stella, &LeBlanc, 1982) controlling the behavior, (b) stimulus control via an irrelevant feature (Etzel, et al, 1982) that was correlated with reinforcement in a previously trained (and mastered) discrimination task involving two compound stimuli, but is not correlated with reinforcement across the entire stimulus class, or (c) single feature stimulus control in discrimination learning across a stimulus class that involves compound elements, both discriminative and non-discriminative features. For clarity, I will respectively term these sources of restricted stimulus control as the following: (a) identical feature control, (b) irrelevant feature control, and (c) incomplete stimulus control.…”